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I'll try to upload a better picture. If it's indeed 1971, it's the worst writing of a 7 in the world. :)

Here is a picture of the label: http://i34.photobucket.com/albums/d133/JeremiahClayton/date.jpg

I could be mistaken, but it looks like 8 4(11?) 1921

I don't think the company was founded in 1936, because the sticker on the inside of mine is dated 1921.